Closure for collapsible tubes



Aug. 8, 1939 E Q PINK 2 2,168,822

CLOSURE FOR COLLAPSIBLE TUBES Fi1ed Nov. 5, 1938 2 Sheets-Sheet 1Inventor A tiorneys 1939 E. c FINK 2,168,822

CLOSURE FOR COLLAPSIBLE TUBES Filed Nov. 5, 1938 2 Sheets-Sheet 2 Invenior Patented Aug. 8, 1939 UNITED STATES PATENT OFFICE 1 Claim.

' which is adapted for attachment to different tubes at will to become apermanent part of the tube until the latter is empty.

To the accomplishment of the foregoing, and

subordinate objects presently appearing, a preferredembodiment of myinvention has been illustrated in the accompanying drawings, set forthin detail in the succeeding description, and

defined in the claim appended hereto.

In said drawings: Figure 1 is a fragmentary view in side elevation of acollapsible tube equipped with a preferred embodiment of my improvedclosure.

Figure 2 is a \iCW partly in side elevation and partly in transversesection.

Figure 3 is a view in section taken on the line 33 of Figure 1 lookingin the direction indicated by the arrows and drawn to an enlarged scale.

Figure 4 is a similar view taken on the line 44 of Figure 1 looking inthe direction indicated by the arrows,

Figure 5 is a view in bottom plan of the closure member, and

Figure 6 is a view in edge elevation of said member.

Referring to the drawings by numerals, accord:- ing to my invention, thetube I, which is of the usual collapsible type, is equipped with areduced neck 2 terminating in an enlarged frusto conical nozzle 3. Aclosure member for the nozzle 3 is provided in the form of a flap 4 ofmoulded rubber having adjacent one end thereof an enlarged annular cappart 5, a diametrical cap manipulating tab 6 extending from said cappart, and a tail piece 1 extending from said cap part diametricallyopposite the tab 6 and terminating in an enlarged eyelet-like end 8. Theend 8 is of the requisite inside diameter to fit snugly around the pneck 2 and the tail piece I is of a length such that in the describedposition of the end 8 said piece.

and a reduced mouth opening l0 leading from said socket 9 to one side ofsaid part and slightly smaller in diameter than that of the neck 2.

The manner in which the described closure is operated will be understoodfrom the foregoing. 5

Sufiice it to explain that the end 8 is stretched over the nozzle 3 andforced down upon the neck 2 whereby the closure is permanently attachedto the tube I, against loss, but may be transferred to another similartube when desired. When it 10 is desired to close the nozzle 3, the tab6 is grasped and the cap part 5 forced down over said nozzle 3, the tailpiece bending as will .be understood to permit such placement of saidcap part. In the applied position of cap part 5 the socket 9 hugs 15 thenozzle 3 and the edges of the mouth H) the neck 2 thereby hermeticallysealing said nozzle. When it is desired to open the nozzle 3, the tab 6may be grasped and thecap part 5 pulled off the nozzle 3 and from underthe same whereupon 20 the tail piece I will react to throw said cap partconical nozzle on the outer end of said neck, and

a closure member for said nozzle comprising a strip of resilientmaterial having an eyelet-like end sleeved onto said neck and providedwith an aperture therein fitting snugly around said neck whereby saidend is prevented from slipping oiT said neck by said nozzle, the otherend of said strip being enlarged and socketed to provide a cap forclosing said nozzle, said socket being frusto conical in'shape andslightly smaller than said nozzle to tightly hug the latter and having a45 restricted mouth whereby said cap may be positioned over said nozzlewith a snap action, and a finger grip tab extending from said cap foruse in positioning the same.

ELMER C. FINK. 5o

